Nothing is known about The Welder because he was just some random guy who held up a restaurant in the final chapter of Black and White. He was a joke that was surprisingly hard to defeat. Albeit it was only because the Titans didn't want to be noticed. And he was incredibly lucky. But stupid. Gar had commented on how stale the bread was("They’re as stale as your Dad, as in stale as hell…") , which lead Raven to use it to knock him out.

"Funnily" enough, The Welder had been thought of by Cyborg in a game he and BB were playing the day Noel joined. BB commented on this with "Man, maybe there’s a Purple Man running around somewhere too…".